Dampp-chaser Piano Humidifier Treatment 16 oz Bottle with 4 Pads, Liner, and Clean Sleeve Humidifier Treatment designed to reduce mineral build-up; Prolongs the life of your humidifier and pads Dampp-Chaser Piano Humidifier Treatment 16 oz. Bottle. Helps to keep the watering tube clean and clear Bundle also includes: 4 Humidifier Replacement Pads, 1 Black Liner, and 1 Clean Sleeve. Complete Instructions included for changing pads, liner, and clean sleeve.